中文字幕不卡在线HD女神喷水,凹凸国产熟女精品视频app,麻豆人妻,日韩在线网址,国产乱码1卡二卡3卡四卡5,国产成人一区二区三区免费 ,午夜在线观看成人av,久久精品国产亚洲av嫖农村妇女,欧美日本道免费二区三区,日本欧美一区二区三区在线播放

種兔母兔難產(chǎn)的造成的三項(xiàng)原因?

發(fā)布日期:2016-12-02 來源:http://www.lilituan.com 發(fā)布人:admin

1、初產(chǎn)適時(shí)配種。種兔母兔初次配種年齡在5.5個(gè)月齡左右,體重在2.75公斤左右。如果初產(chǎn)年齡、體重過高、過重,初產(chǎn)種兔母兔的難產(chǎn)率有增高的趨勢。

1 primiparous, timely breeding. Rabbit rabbit mother first breeding at the age of 5.5 months old, weighing 2.75 kg. If the age of first, overweight, overweight, primiparous female rabbit rabbit dystocia rate increased.

2、種兔母兔懷孕期提供適宜的營養(yǎng)。有些兔子養(yǎng)殖戶有一個(gè)誤區(qū):認(rèn)為種兔一旦懷孕,飼喂的越多越好,飼料營養(yǎng)越高越好,其實(shí)據(jù)山西省農(nóng)科院畜牧獸醫(yī)研究所兔子養(yǎng)殖研究室在開展“種兔飼養(yǎng)標(biāo)準(zhǔn)及預(yù)混料”課題研究中發(fā)現(xiàn),對于懷孕的種兔母兔,采用飼料營養(yǎng)水平為低能量(10.47兆焦/千克)、中蛋白水平(粗蛋白17.5%),限制飼養(yǎng)(170克/天)的飼養(yǎng)方式,窩產(chǎn)仔數(shù)更高,未發(fā)現(xiàn)有難產(chǎn)情況發(fā)生.

2, rabbit rabbit pregnancy to provide appropriate nutrition. Some rabbit farmers have a misunderstanding that the rabbit once pregnant, feeding more, feed nutrition is good, in fact, according to the rabbit of Shanxi Academy of animal husbandry and Veterinary Research Institute of aquaculture research laboratory in carry out the "rabbit feeding standard and premix" found in the research, for pregnant female rabbit rabbit, the feed nutrition level low energy (10 trillion and 470 billion kJ / kg) and protein levels (17.5% crude protein), restricted feeding (170 g / day) feeding, litter size was not found to have the highest, dystocia occurs.

而采用高能量、高蛋白的營養(yǎng)水平,產(chǎn)仔數(shù)減少,分娩障礙發(fā)生率較高。因?yàn)楦吣芰俊⒏叩鞍自斐商哼^大,占據(jù)子宮空間,引起死胎增加,同時(shí)胎兒過大,難產(chǎn)的風(fēng)險(xiǎn)增大。但如果懷孕種兔母兔體質(zhì)過弱,由于產(chǎn)力不足,也易造成難產(chǎn)。因此在生產(chǎn)中根據(jù)種兔母兔的體況,調(diào)節(jié)飼喂量,保持7~8成膘情就可以了,待分娩后再逐漸增加飼喂量。

The nutrition level of high energy, high protein, decreased litter size, birth disorder incidence. Because of the high energy, high protein cause fetal uterus is too large, occupy the space, causing stillbirth increased, while the fetus is too large, the increased risk of dystocia. But if the pregnant female rabbit rabbit body is too weak, because the production capacity is insufficient, but also easy to cause dystocia. Therefore, in the production of female rabbit rabbit according to the body condition, adjust feeding amount, keep 7 ~ 8 of the can, stay after delivery and then gradually increase the feeding amount.

3、胎位不正。種兔難產(chǎn)也可能是胎位、胎向、胎勢不正引起。

3, malposition. Rabbit dystocia may also be the fetal position, fetal and fetal potential is not caused to.

山東省蒙陰鑫華種兔場的長毛兔提供技術(shù)支持,更多精彩內(nèi)容請進(jìn)入:http://www.lilituan.com,我們會傾情為您解答。

Provide technical support for the Shandong Province, Mengyin Xinhua Tuchang Angora rabbit, more exciting content, please enter: http://www.lilituan.com, we will love to answer your questions.

 

91国语精品自产拍在线观看| 亚洲一区二区三区中文视频| 久久久精品国产亚洲av日韩| 国产玖玖视频| 元码人妻精品一区二区三区9 | 宅男久久精品国产亚洲av麻豆 | 亚洲国产成人久久一区久久| 成人无码视频在线观看网站 | 成人午夜天| 国产精品自在在线午夜| 另类zozozozozo交| 又湿又紧又大又爽a视频| 亚洲午夜福利网在线观看| 亚洲 欧美 唯美 国产 伦 综合| 国产成人精品久久| 波多野av一区二区无码| 久久AV中文综合一区二区| 97久久超碰国产精品2021| 成人做爰高潮片免费视频| 亚洲中文字幕日产无码| 日本大胆欧美人术艺术| 99久久精品免费看国产电影| 8av国产精品爽爽ⅴa在线观看| 亚洲人成精品久久熟女| 我们高清日本免费观看| 久久久www成人免费精品| 夜色福利站WWW国产在线视频 | av国产剧情md精品麻豆| 亚洲AV高清一区二区三区尤物| 欧美人与动zozo在线播放| 女同久久一区二区三区| 国产精品爽爽久久久久久蜜臀| 在国产线视频A在线视频| 俄罗斯少妇性XXXX另类| 波多野结衣色av一本一道| 少妇人妻偷人精品视频app| 浮力影院50826草草ccyy| 国产一区二区三区美女| 亚洲国产日韩在线人高清 磁力| 国产精品手机在线观看你懂的| 亚洲国产精品日韩在线|